Which of the following interior compartment temperatures are commonly used for refrigerated freight?

A) 35 degrees F (2 degrees C)
B) 0 degrees F (-18 degrees C)
C) -20 degrees F (-29 degrees C)
D) all of the above

All of the listed temperatures are commonly used for refrigerated freight, depending on the specific requirements of the cargo being transported. 35 degrees F is typical for refrigerated goods, 0 degrees F for frozen goods, and -20 degrees F for deep-frozen items.